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Re: st: the use of loop function in Stata


From   Rosie Chen <jiarongchen2002@yahoo.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: the use of loop function in Stata
Date   Tue, 13 Mar 2012 11:50:48 -0700 (PDT)

Thank you, Steve and Till. Below is the revised syntax, but I got an error message of "variable lnamelist not found".  Isn't lp* the list? This is the first time I use the loop function, so any suggestion would be appreciated. 

foreach lname in lnamelist lp*{
histogram `lname',  by(AI4, col(1))
graph save histogram`lname', replace
}


----- Original Message -----
From: Steve Nakoneshny <scnakone@ucalgary.ca>
To: "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Cc: 
Sent: Tuesday, March 13, 2012 11:28 AM
Subject: Re: st: the use of loop function in Stata

You will also need to add the -replace- option to the histogram command.

On 2012-03-13, at 8:44 AM, Dr. Till Ittermann wrote:

> Hi,
> 
> I would loop over lname not var:
> 
> foreach lname in lnamelist {
> histogram `lname',  by(AID4, col(1))
> graph save histogram`lname'
> }
> 
> 
> 
> m 13.03.2012 15:36, schrieb Rosie Chen:
>> Nick, thank you very much for the further advice, which makes the syntax more efficient. Given the loop syntax I have, how to save all the histogram graphs? If I use the code below, the error message says: "file histogram.gph already exists".
>> 
>> 
>> foreach var of varlist lp*{
>> 
>>     histogram `var',  by(AID4, col(1))
>> 
>>     graph save histogram
>> }
>> 
>> 
>> *
>> *   For searches and help try:
>> *  http://www.stata.com/help.cgi?search
>> *   http://www.stata.com/support/statalist/faq
>> *   http://www.ats.ucla.edu/stat/stata/
> 
> 
> -- 
> Till Ittermann, Dr. rer. med.
> Institut for Community Medicine - SHIP-KEF
> Walther-Rathenau-Str. 48
> 17487 Greifswald
> 
> Phone: ++49 3834 867552
>   Fax: ++49 3834 866684
> 
> *
> *   For searches and help try:
> *  http://www.stata.com/help.cgi?search
> *  http://www.stata.com/support/statalist/faq
> *  http://www.ats.ucla.edu/stat/stata/


*
*   For searches and help try:
*  http://www.stata.com/help.cgi?searchhttp://www.stata.com/support/statalist/faqhttp://www.ats.ucla.edu/stat/stata/


*
*   For searches and help try:
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*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


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